Vice President Harris gets ready to speak to campaign staff at her campaign headquarters in Wilmington, Del., on Monday. Harris won the crucial backing of Democratic heavyweight Nancy Pelosi to lead the party against former President Donald Trump in November after President Biden's stunning exit from the 2024 race. As the endorsements stacked up, the 59-year-old Harris made her first public appearance since Biden's announcement in a ceremony at the White House, where she warmly praised the outgoing president's "unmatched" achievements. (AFP via Getty Images)